{
  "license": "CC BY 4.0",
  "attribution": "fysical.ai / whatro.bot",
  "source": "https://github.com/fysical-ai/whatrobot-catalog",
  "url": "https://whatro.bot/component/zeroerr-erob/",
  "html": "https://whatro.bot/component/zeroerr-erob/",
  "taxonomy_version": "2026-01",
  "catalog_version": "2026-01",
  "handle": "zeroerr-erob",
  "name": "ZeroErr eRob",
  "kind": "component",
  "manufacturer": {
    "handle": "zeroerr",
    "name": "ZeroErr",
    "country": "CN"
  },
  "category": {
    "id": "cp-2-1",
    "full_name": "Component > Actuator > Joint module",
    "path": [
      {
        "id": "cp",
        "name": "Component",
        "handle": "component"
      },
      {
        "id": "cp-2",
        "name": "Actuator",
        "handle": "actuator"
      },
      {
        "id": "cp-2-1",
        "name": "Joint module",
        "handle": "joint-module"
      }
    ],
    "url": "https://whatro.bot/components/actuator/joint-module/"
  },
  "facts": {
    "component_kind": "actuator",
    "motion": "rotary",
    "has_reducer": true,
    "integrated_control": true,
    "joint_grade": true
  },
  "variants": [
    {
      "name": "eRob 142I",
      "note": "1,000 W; ratios 50/80/100/120/160; rated 99–178 Nm; 6.49 kg"
    },
    {
      "name": "eRob 142T"
    },
    {
      "name": "eRob 110I"
    },
    {
      "name": "eRob 90I"
    },
    {
      "name": "eRob 80I"
    },
    {
      "name": "eRob 80T"
    },
    {
      "name": "eRob 70I"
    }
  ],
  "availability": "shipping",
  "attributes": {
    "segment": [
      "professional",
      "research"
    ],
    "rated_torque": 178,
    "peak_torque": 433,
    "gear_ratio": 100,
    "reducer_type": "harmonic",
    "interface": [
      "ethercat",
      "can",
      "rs485"
    ],
    "voltage": 48,
    "mass": 6.49
  },
  "summary": "eRob is ZeroErr's series of integrated rotary actuators that combine a servo motor, strain wave (harmonic) reducer, dual absolute encoders, driver and optional brake or torque sensor in one housing, controlled over EtherCAT, CANopen or Modbus. Sizes run from the 70 mm class up to the 142 mm class; the attribute values above are the eRob 142I at 100:1, the variant with a fetched spec sheet.",
  "links": {
    "product": "https://en.zeroerr.cn/rotary_actuators/erob142i"
  },
  "offers": [
    {
      "seller": "rcdrone.top (Shenzhen Baichen Trading)",
      "url": "https://rcdrone.top/products/zeroerr-erob-142-i-motor",
      "price": 2333,
      "currency": "USD",
      "date": "2026-10-28",
      "affiliate": false,
      "note": "eRob 142I; sold out at access; meta tag shows $2,305"
    }
  ],
  "sources": [
    {
      "title": "rcdrone.top eRob 142I listing",
      "url": "https://rcdrone.top/products/zeroerr-erob-142-i-motor",
      "accessed": "2026-10-28",
      "for": [
        "specs",
        "price"
      ]
    },
    {
      "title": "ZeroErr eRob page (80T URL)",
      "url": "https://en.zeroerr.cn/rotary_actuators/erob80t",
      "accessed": "2026-10-28",
      "for": [
        "facts",
        "other"
      ]
    },
    {
      "title": "Robotics Center ZeroErr brand page",
      "url": "https://www.roboticscenter.ai/store/brand/zeroerr",
      "accessed": "2026-10-28",
      "for": [
        "variants"
      ]
    }
  ],
  "unverified": [
    "release_year"
  ],
  "notes": "peak_torque 433 Nm is the 100:1 figure to match gear_ratio; the 160:1 variant is 484 Nm. Unverified (free text): per-variant-specs; manufacturer-direct-price. The official en.zeroerr.cn page fetched was generic (no per-model numbers). rcdrone spec table lists 6.49 kg while its drawing says 6.7 kg. Peak 484 Nm is the 160:1 start/stop figure; 100:1 is 433 Nm. Variant names come from product URLs only.",
  "tags": [],
  "price": {
    "amount": 2333,
    "currency": "USD",
    "date": "2026-10-28",
    "seller": "rcdrone.top (Shenzhen Baichen Trading)",
    "url": "https://rcdrone.top/products/zeroerr-erob-142-i-motor"
  },
  "attribute_definitions": {
    "segment": {
      "name": "Segment",
      "type": "enum",
      "unit": null,
      "description": "Buyer groups that would plausibly buy this at list price."
    },
    "rated_torque": {
      "name": "Rated torque",
      "type": "number",
      "unit": "Nm",
      "description": "Continuous rated torque."
    },
    "peak_torque": {
      "name": "Peak torque",
      "type": "number",
      "unit": "Nm",
      "description": "Peak torque."
    },
    "gear_ratio": {
      "name": "Gear ratio",
      "type": "number",
      "unit": "ratio",
      "description": "Reduction ratio expressed as N in N:1."
    },
    "reducer_type": {
      "name": "Reducer type",
      "type": "enum",
      "unit": null,
      "description": "Gear reduction principle."
    },
    "interface": {
      "name": "Interface",
      "type": "enum",
      "unit": null,
      "description": "Electrical and communication interfaces."
    },
    "voltage": {
      "name": "Voltage",
      "type": "number",
      "unit": "V",
      "description": "Nominal supply voltage."
    },
    "mass": {
      "name": "Mass",
      "type": "number",
      "unit": "kg",
      "description": "Product mass as specified."
    }
  }
}